Seriously?
Imagine you've saved up and spent thousands on a brand new laptop (say) and - within a few days - your husband took it while you were out because it's better than his less-expensive laptop and just wanted to play around with the shiny, then dropped it through his own carelessness while carrying it on a stack of other things and smashed the screen.
You don't think you'd be justified in being pretty angry about it?
I mean, it's by no means a relationship-ender, but it's definitely something to justifiably be pissed off about. Your point about it being legally "their" property is somewhat moot, because that means that - regardless of how it gets paid for - the damage is going to cost "them" nearly a grand to put right, for no good reason.
So now consider that, in the above example, your husband has cost your family nearly a grand through causing damage to something of yours through stupidity for no better reason than he wanted to play with it.
It's still very much something to be pissed off about, also something to make efforts to prevent in future. Something like, "You've got your own laptop and you have no reason to use mine, so please do that in future", perhaps?
For what it's worth, I can't fault the way the OP has handled it - she 'fessed up, admitted that it was her fault, is paying for the damage and won't do it in future. That's pretty much exactly how to deal with it.